
public class Demo4Test {
	public static void main(String[] args) {
		Demo4 reslut = new Demo4();
		int sum1 = reslut.Demo4(1, 2);
		int sum2 = reslut.Demo4(1, 2, 3);
		double sum3 = reslut.Demo4(1.0, 2.0);
		System.out.println(sum1);
		System.out.println(sum2);
		System.out.println(sum3);

	}
}
